Scientists aren't sure what color dinosaurs were.
312
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
One cubic foot of gold weighs more than 1,200 pounds!
78
A cubic yard of air weighs about 2 pounds at sea level.
31
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11